House flipping is one of the most heavily taxed real estate strategies. Short-term profits are often subject to ordinary income tax, capital gains tax, and self-employment taxes. However, when structured properly, a Self-Directed IRA or Solo 401(k) can be used to flip homes in a way that legally eliminates or defers taxes altogether.

Since the creation of the IRA in the early 1970s, the IRS has permitted retirement account holders to use IRA funds to buy, hold, and sell real estate. This includes residential and commercial property, undeveloped land, domestic or foreign real estate, and homes intended for flipping.

When executed correctly, all income and gains from these investments flow back into the retirement account, tax-deferred or tax-free, depending on the type of account used.

How Flipping Homes with Retirement Funds Works

With a Self-Directed IRA or Solo 401(k), you gain investment flexibility beyond stocks and mutual funds. These accounts allow you to purchase real estate and engage in house flipping using retirement funds.

A major advantage is checkbook control. With a Self-Directed IRA LLC or Solo 401(k), you have full authority over investment decisions and direct access to a dedicated bank account. This allows you to buy property, pay for renovations, and sell homes as easily as writing a check or wiring funds—without custodian consent.

All IRA funds are held in the name of the IRA-owned LLC or the Solo 401(k) trust at a local bank. You can write checks or send wires directly from the account, and no custodian is required to sign real estate transaction documents.

Tax Benefits of Flipping Homes Inside an IRA

Using an IRA to flip property changes the tax treatment entirely.

Traditional IRA or Solo 401(k): Profits grow tax-deferred until a distribution is taken.

Roth IRA: When structured properly, all gains may be completely tax-free.

This structure eliminates:

  • Short-term capital gains tax
  • Self-employment tax
  • Quarterly estimated taxes
  • Depreciation recapture

Instead, profits remain inside the retirement account and can be reinvested repeatedly without tax friction. Because IRA income is not taxed by transaction type, it does not matter whether a property is held for one day or ten years.

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Why Most Brokerages Don’t Allow Real Estate IRAs

Many investors assume real estate investing inside an IRA is prohibited because brokerage firms do not allow it. The IRS, however, has never prohibited real estate investments inside IRAs.

The limitation comes from brokerage business models, which are designed for securities trading—not for property closings, contractor payments, or deed recordings. To invest in real estate, investors need a Self-Directed IRA structure that supports alternative assets.

The Role of Unrelated Business Taxable Income (UBTI)

While most IRA real estate investments do not trigger tax, Unrelated Business Taxable Income (UBTI) rules must be considered when flipping homes.

UBTI exists to tax retirement accounts when they engage in active business operations or use leverage. The IRS examines whether an activity constitutes an unrelated trade or business that is regularly carried on.

In evaluating whether UBTI applies, the IRS looks at:

  • Frequency of transactions
  • Intent to engage in a business
  • Volume and scope of activity
  • Whether the activity resembles a commercial enterprise

There is no clear test for how many flips trigger UBTI. One or two transactions are generally not considered an active trade or business. However, multiple flips within a year may require a facts-and-circumstances analysis.

Passive activities—such as those generating capital gains, interest, or rental income—are generally exempt under Internal Revenue Code Section 512. Because UBTI determinations are highly fact-specific, working with a knowledgeable tax professional is essential.

Prohibited Transaction Rules

The IRS does not prohibit real estate investing inside an IRA. It prohibits personal benefit.

This means:

  • You cannot flip your own home
  • You cannot pay yourself or perform labor
  • You cannot rent to family members
  • You cannot live in the property
  • You cannot personally guarantee loans

Violations can disqualify the entire IRA and trigger immediate taxation. When handled correctly, these rules are straightforward but must be followed carefully.

Why Checkbook Control Is Ideal for Flipping

House flipping is time-sensitive. Offers must be made quickly, contractors paid promptly, and materials ordered without delay.

With an IRA-owned LLC or Solo 401(k):

  • You can write checks instantly
  • Wire funds the same day
  • Pay contractors directly
  • Close deals efficiently

The structure provides speed, autonomy, privacy, and an added layer of liability protection—while keeping all profits inside the retirement account.

Why IRA Financial

At IRA Financial, we specialize in helping investors flip real estate using Self-Directed IRAs and Solo 401(k)s. Our team handles the setup of the entire Self-Directed IRA LLC structure, typically completed within 7–21 days depending on the custodian and state of formation.

Our IRA experts and tax and ERISA professionals help streamline setup, reduce costs, and ensure compliance with IRS rules. We also offer a wide range of alternative investment options beyond real estate, with low flat annual fees and no asset-based valuation charges.

Conclusion

Flipping real estate inside a Self-Directed IRA or Solo 401(k) transforms one of the most heavily taxed investment strategies into one of the most tax-efficient.

With the right structure, investors can eliminate capital gains tax, defer or avoid income taxes, and reinvest profits without erosion. The key is proper setup, disciplined compliance, and working with an experienced provider.

When executed correctly, a Self-Directed IRA allows investors to flip homes with confidence, control, and tax efficiency—empowering them to invest freely and retire confidently.

Adam Bergman - Founder

About the Author

Adam Bergman is a tax attorney and the founder of IRA Financial, one of the largest Self-Directed IRA platforms in the United States. He has helped more than 27,000 clients take control of their retirement savings, overseeing over $5 billion in retirement assets. Adam is also the author of nine books focused on helping investors understand and confidently manage their retirement strategies.